Steam boilek ffenaoe



(No Model.)

J. GOOD. STEAM BDILBR FURNACE.

Patented Aug. 27, 1889.

mum

N. PETERS, Pmwum nm Wushillgtoh. n. c.

UNITED STATES ATENT JOHN GOOD, OF NAPANEE, ONTARIO, CANADA, ASSIGNOR OFONE-HALF TO JAMES E. HERRING, OF SAME PLACE.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent No. 409,784, dated August27, 1889.

Application filed May 4, 1889. Serial No. 309,659. (No model.)

To all whom, it may concern:

Be it known that I, JOHN GOOD, of Napanee, in the Province ofOntario,Dominion of Canada, have invented certain new and usefulImprovements in Steam-Boiler Furnaces; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming a part hereof.

My invention, which will be hereinafter fully set forth and claimed,relates to furnaces for steam-boilers of that class in which steam andheated air are used as auxiliaries.

The object of the invention is a furnace by which great economyof fuelis obtained both by using a very low and inexpensive quality of coal andin the consumption of a small quantity of the same.

Figure 1 is a longitudinal section of my improved apparatus on line a00, Figs. 2 and 3, showing the boiler in elevation. Fig. 2 is ahorizontal section of the same 011 line y y, Figs. 1 and Figs. 3 is atransverse section of the same on line .2 .2, Figs. 1 and 2.

Sections of this iron and metal work are shown in plain thick solidlines.

B is a steam-boiler placed in a brick setting A, which may be theordinary setting, except as far as my improvements necessitatemodification of the same.

O is a fire-grate of any desired construction and form of gratebars, andO is a smaller secondary or supplementary grate placed beyond and thefront end supported upon the bridge A, separate closed aslrpits A and Abeing formed under each. In the ash-pit A" an opening provided with adamper for the admission and regulation of an air-supply is desirable.

-D is acapacious air-pipe set to one side and under the boiler and sothat the products of combustion may freely play around it, an opensetting A or any other convenient form being used. The pipe D is open atthe rear to provide a free entrance to the air, but may have bends orelbows-such as D attached to give any desired turn to the air-inlet. Atthe front the pipe D is connected by an elbow D to the stem of aninverted-T pipe D" placed opposite the ash-pit O, and to the trunk ofsaid T-pipe is connected a short pipe D" containing a tapering nozzle dand penetrating the ash-pit front a, which is made approximatelyair-tight and projects in said ash-pit A and under the grate O.

E is a steam-superb eater placed transversely under the boiler andconsisting of a strong cast-ironbox divided by two partitions E E, ofwhich one stops short of the delivery end and the other of the supplyend into a continuous return-passage, starting at the supply end e andterminating at the delivery end 6, each of which is closed with asteam-tight cover 6 and 6', provided with a nozzle for connection with asteam-pipe. The supply end 6 is connected to a steam-pipe F, takingsteam from the boiler, and the delivery end 6 with a steam-pipe F,leading to the front of the boiler and passing through the trunk of theT-pipe D" into the short pipe D and nozzle cZ, in which it terminates ina nozzle f, forming a jet-exhauster.

Plain arrows indicate the direction of the air and feathered arrows thedirection of the steam or steam converted into gas.

The apparatus operates as follows: Steam is passed from the boiler bythe pipe F into the superheater E, where it is superheated and convertedinto a permanent gas, commonly termed F water-gas. Thence it passes bythe pipe F, through the-T pipe D, into the nozzle d, where it forms anexhauster to the air-pipe, capable of forming a powerful vacuum. Air isdrawn by the exhauster into and through the pipe D, D, D, andD',becoming heated therein and discharged, mixed with the water-gasunder the grate O, through which and the incandescent fuel upon it itpasses and is ignited by the latter. To prevent the escape of a portionof the same and from the solid fuel upon the grate unconsumed, thesecondary grate O is used, which is kept covered with incandescent fueland directly over which the superheater E is placed, said secondarygrate having practically the effect of a smoke-consumer. As thewater-gas itself forms a considerable portion of the fuel, comparativelylittle coal is consumed, and this may be of the lowest quality,screenings being preferred.

I claim as my invention In a steam-boiler furnace, the combination ofthe air-pipe D, passing longitudinally through the fine and having itsfront end returned and entering the air-tight ash-pit, and provided Witha, nozzle 61', the superheater 5 E, placed transversely under theboiler, steam-pipe F, connecting the superheater with the boiler, pipeF, connecting the discharge end of the superheater and passing throughthe front end of the air-pipe and ter- IO minating in the nozzle rl,forming a jet-exhauster, the grate O and secondary grate 0,

and the air-tight ash-pits A and A substantially as set forth.

In testimony whereof I have signed, in the presence of the undersignedWitn esses, at Nap- 15 mice, Ontario, the 30th day of March, 1889.-

his JOHN GOOD.

mark

Witnesses:

A. L. MORDEN, JAMES E. HERRING.

